 using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace WebTestApp
{
    public class Addition
    {
        public int Add(int a,int b)
        {
            return a + b;
        }
    }
    public class Subtraction
   {
       public int Sub(int a,int b)
       {
           return a-b;
       }
   }
   public class Multiplication
   {
       public int Mult(int a,int b)
      {
            return a*b;
      }
   }
    public class Division
   {
       public float Div(int a,int b)
      {
            return a/b;
      }
   }
}